Density Unit Converter Formula

Understand the math behind the density unit converter. Each variable explained with a worked example.

Use the Density Unit Converter

Formulas Used

g/cm³

g_cm3 = value / 1000

lb/ft³

lb_ft3 = value * 0.062428

lb/gal

lb_gal = value * 0.008345

Specific Gravity

sg = value / 1000

Variables

VariableDescriptionDefault
valueDensity in kg/m³(kg/m³)1000

How It Works

Density Unit Conversion

Density measures mass per unit volume.

Conversion Factors from kg/m³

  • g/cm³ = kg/m³ / 1,000
  • lb/ft³ = kg/m³ x 0.062428
  • lb/gal = kg/m³ x 0.008345
  • Specific Gravity = kg/m³ / 1,000 (referenced to water)

    • Worked Example

    Convert 1000 kg/m³ (water).

    value = 1000
    1. 01g/cm³ = 1000 / 1000 = 1.0
    2. 02lb/ft³ = 1000 x 0.062428 = 62.428
    3. 03lb/gal = 1000 x 0.008345 = 8.345
    4. 04SG = 1000 / 1000 = 1.0

    Ready to run the numbers?

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